@angular/core/fesm2020/testing.mjs.map

Angular - the core framework

{"version":3,"file":"testing.mjs","sources":["../../../../../../packages/core/testing/src/async.ts","../../../../../../packages/core/testing/src/component_fixture.ts","../../../../../../packages/core/testing/src/fake_async.ts","../../../../../../packages/core/src/metadata/resource_loading.ts","../../../../../../packages/core/testing/src/metadata_overrider.ts","../../../../../../packages/core/testing/src/resolvers.ts","../../../../../../packages/core/testing/src/r3_test_bed_compiler.ts","../../../../../../packages/core/testing/src/test_bed_common.ts","../../../../../../packages/core/testing/src/r3_test_bed.ts","../../../../../../packages/core/testing/src/test_bed.ts","../../../../../../packages/core/testing/src/test_hooks.ts","../../../../../../packages/core/testing/src/metadata_override.ts","../../../../../../packages/core/testing/src/testing.ts","../../../../../../packages/core/testing/public_api.ts","../../../../../../packages/core/testing/index.ts","../../../../../../packages/core/testing/testing.ts"],"sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Wraps a test function in an asynchronous test zone. The test will automatically\n * complete when all asynchronous calls within this zone are done. Can be used\n * to wrap an {@link inject} call.\n *\n * Example:\n *\n * ```\n * it('...', waitForAsync(inject([AClass], (object) => {\n *   object.doSomething.then(() => {\n *     expect(...);\n *   })\n * });\n * ```\n *\n * @publicApi\n */\nexport function waitForAsync(fn: Function): (done: any) => any {\n  const _Zone: any = typeof Zone !== 'undefined' ? Zone : null;\n  if (!_Zone) {\n    return function() {\n      return Promise.reject(\n          'Zone is needed for the waitForAsync() test helper but could not be found. ' +\n          'Please make sure that your environment includes zone.js');\n    };\n  }\n  const asyncTest = _Zone && _Zone[_Zone.__symbol__('asyncTest')];\n  if (typeof asyncTest === 'function') {\n    return asyncTest(fn);\n  }\n  return function() {\n    return Promise.reject(\n        'zone-testing.js is needed for the async() test helper but could not be found. ' +\n        'Please make sure that your environment includes zone.js/testing');\n  };\n}\n\n/**\n * @deprecated use `waitForAsync()`, (expected removal in v12)\n * @see {@link waitForAsync}\n * @publicApi\n * */\nexport function async(fn: Function): (done: any) => any {\n  return waitForAsync(fn);\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {ChangeDetectorRef, ComponentRef, DebugElement, ElementRef, getDebugNode, NgZone, RendererFactory2} from '@angular/core';\n\n\n/**\n * Fixture for debugging and testing a component.\n *\n * @publicApi\n */\nexport class ComponentFixture<T> {\n  /**\n   * The DebugElement associated with the root element of this component.\n   */\n  debugElement: DebugElement;\n\n  /**\n   * The instance of the root component class.\n   */\n  componentInstance: T;\n\n  /**\n   * The native element at the root of the component.\n   */\n  nativeElement: any;\n\n  /**\n   * The ElementRef for the element at the root of the component.\n   */\n  elementRef: ElementRef;\n\n  /**\n   * The ChangeDetectorRef for the component\n   */\n  changeDetectorRef: ChangeDetectorRef;\n\n  private _renderer: RendererFactory2|null|undefined;\n  private _isStable: boolean = true;\n  private _isDestroyed: boolean = false;\n  private _resolve: ((result: any) => void)|null = null;\n  private _promise: Promise<any>|null = null;\n  private _onUnstableSubscription: any /** TODO #9100 */ = null;\n  private _onStableSubscription: any /** TODO #9100 */ = null;\n  private _onMicrotaskEmptySubscription: any /** TODO #9100 */ = null;\n  private _onErrorSubscription: any /** TODO #9100 */ = null;\n\n  constructor(\n      public componentRef: ComponentRef<T>, public ngZone: NgZone|null,\n      private _autoDetect: boolean) {\n    this.changeDetectorRef = componentRef.changeDetectorRef;\n    this.elementRef = componentRef.location;\n    this.debugElement = <DebugElement>getDebugNode(this.elementRef.nativeElement);\n    this.componentInstance = componentRef.instance;\n    this.nativeElement = this.elementRef.nativeElement;\n    this.componentRef = componentRef;\n    this.ngZone = ngZone;\n\n    if (ngZone) {\n      // Create subscriptions outside the NgZone so that the callbacks run oustide\n      // of NgZone.\n      ngZone.runOutsideAngular(() => {\n        this._onUnstableSubscription = ngZone.onUnstable.subscribe({\n          next: () => {\n            this._isStable = false;\n          }\n        });\n        this._onMicrotaskEmptySubscription = ngZone.onMicrotaskEmpty.subscribe({\n          next: () => {\n            if (this._autoDetect) {\n              // Do a change detection run with checkNoChanges set to true to check\n              // there are no changes on the second run.\n              this.detectChanges(true);\n            }\n          }\n        });\n        this._onStableSubscription = ngZone.onStable.subscribe({\n          next: () => {\n            this._isStable = true;\n            // Check whether there is a pending whenStable() completer to resolve.\n            if (this._promise !== null) {\n              // If so check whether there are no pending macrotasks before resolving.\n              // Do this check in the next tick so that ngZone gets a chance to update the state of\n              // pending macrotasks.\n              scheduleMicroTask(() => {\n                if (!ngZone.hasPendingMacrotasks) {\n                  if (this._promise !== null) {\n                    this._resolve!(true);\n                    this._resolve = null;\n                    this._promise = null;\n                  }\n                }\n              });\n            }\n          }\n        });\n\n        this._onErrorSubscription = ngZone.onError.subscribe({\n          next: (error: any) => {\n            throw error;\n          }\n        });\n      });\n    }\n  }\n\n  private _tick(checkNoChanges: boolean) {\n    this.changeDetectorRef.detectChanges();\n    if (checkNoChanges) {\n      this.checkNoChanges();\n    }\n  }\n\n  /**\n   * Trigger a change detection cycle for the component.\n   */\n  detectChanges(checkNoChanges: boolean = true): void {\n    if (this.ngZone != null) {\n      // Run the change detection inside the NgZone so that any async tasks as part of the change\n      // detection are captured by the zone and can be waited for in isStable.\n      this.ngZone.run(() => {\n        this._tick(checkNoChanges);\n      });\n    } else {\n      // Running without zone. Just do the change detection.\n      this._tick(checkNoChanges);\n    }\n  }\n\n  /**\n   * Do a change detection run to make sure there were no changes.\n   */\n  checkNoChanges(): void {\n    this.changeDetectorRef.checkNoChanges();\n  }\n\n  /**\n   * Set whether the fixture should autodetect changes.\n   *\n   * Also runs detectChanges once so that any existing change is detected.\n   */\n  autoDetectChanges(autoDetect: boolean = true) {\n    if (this.ngZone == null) {\n      throw new Error('Cannot call autoDetectChanges when ComponentFixtureNoNgZone is set');\n    }\n    this._autoDetect = autoDetect;\n    this.detectChanges();\n  }\n\n  /**\n   * Return whether the fixture is currently stable or has async tasks that have not been completed\n   * yet.\n   */\n  isStable(): boolean {\n    return this._isStable && !this.ngZone!.hasPendingMacrotasks;\n  }\n\n  /**\n   * Get a promise that resolves when the fixture is stable.\n   *\n   * This can be used to resume testing after events have triggered asynchronous activity or\n   * asynchronous change detection.\n   */\n  whenStable(): Promise<any> {\n    if (this.isStable()) {\n      return Promise.resolve(false);\n    } else if (this._promise !== null) {\n      return this._promise;\n    } else {\n      this._promise = new Promise(res => {\n        this._resolve = res;\n      });\n      return this._promise;\n    }\n  }\n\n\n  private _getRenderer() {\n    if (this._renderer === undefined) {\n      this._renderer = this.componentRef.injector.get(RendererFactory2, null);\n    }\n    return this._renderer as RendererFactory2 | null;\n  }\n\n  /**\n   * Get a promise that resolves when the ui state is stable following animations.\n   */\n  whenRenderingDone(): Promise<any> {\n    const renderer = this._getRenderer();\n    if (renderer && renderer.whenRenderingDone) {\n      return renderer.whenRenderingDone();\n    }\n    return this.whenStable();\n  }\n\n  /**\n   * Trigger component destruction.\n   */\n  destroy(): void {\n    if (!this._isDestroyed) {\n      this.componentRef.destroy();\n      if (this._onUnstableSubscription != null) {\n        this._onUnstableSubscription.unsubscribe();\n        this._onUnstableSubscription = null;\n      }\n      if (this._onStableSubscription != null) {\n        this._onStableSubscription.unsubscribe();\n        this._onStableSubscription = null;\n      }\n      if (this._onMicrotaskEmptySubscription != null) {\n        this._onMicrotaskEmptySubscription.unsubscribe();\n        this._onMicrotaskEmptySubscription = null;\n      }\n      if (this._onErrorSubscription != null) {\n        this._onErrorSubscription.unsubscribe();\n        this._onErrorSubscription = null;\n      }\n      this._isDestroyed = true;\n    }\n  }\n}\n\nfunction scheduleMicroTask(fn: Function) {\n  Zone.current.scheduleMicroTask('scheduleMicrotask', fn);\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst _Zone: any = typeof Zone !== 'undefined' ? Zone : null;\nconst fakeAsyncTestModule = _Zone && _Zone[_Zone.__symbol__('fakeAsyncTest')];\n\nconst fakeAsyncTestModuleNotLoadedErrorMessage =\n    `zone-testing.js is needed for the fakeAsync() test helper but could not be found.\n        Please make sure that your environment includes zone.js/testing`;\n\n/**\n * Clears out the shared fake async zone for a test.\n * To be called in a global `beforeEach`.\n *\n * @publicApi\n */\nexport function resetFakeAsyncZone(): void {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.resetFakeAsyncZone();\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n\n/**\n * Wraps a function to be executed in the `fakeAsync` zone:\n * - Microtasks are manually executed by calling `flushMicrotasks()`.\n * - Timers are synchronous; `tick()` simulates the asynchronous passage of time.\n *\n * If there are any pending timers at the end of the function, an exception is thrown.\n *\n * Can be used to wrap `inject()` calls.\n *\n * @param fn The function that you want to wrap in the `fakeAysnc` zone.\n *\n * @usageNotes\n * ### Example\n *\n * {@example core/testing/ts/fake_async.ts region='basic'}\n *\n *\n * @returns The function wrapped to be executed in the `fakeAsync` zone.\n * Any arguments passed when calling this returned function will be passed through to the `fn`\n * function in the parameters when it is called.\n *\n * @publicApi\n */\nexport function fakeAsync(fn: Function): (...args: any[]) => any {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.fakeAsync(fn);\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n\n/**\n * Simulates the asynchronous passage of time for the timers in the `fakeAsync` zone.\n *\n * The microtasks queue is drained at the very start of this function and after any timer callback\n * has been executed.\n *\n * @param millis The number of milliseconds to advance the virtual timer.\n * @param tickOptions The options to pass to the `tick()` function.\n *\n * @usageNotes\n *\n * The `tick()` option is a flag called `processNewMacroTasksSynchronously`,\n * which determines whether or not to invoke new macroTasks.\n *\n * If you provide a `tickOptions` object, but do not specify a\n * `processNewMacroTasksSynchronously` property (`tick(100, {})`),\n * then `processNewMacroTasksSynchronously` defaults to true.\n *\n * If you omit the `tickOptions` parameter (`tick(100))`), then\n * `tickOptions` defaults to `{processNewMacroTasksSynchronously: true}`.\n *\n * ### Example\n *\n * {@example core/testing/ts/fake_async.ts region='basic'}\n *\n * The following example includes a nested timeout (new macroTask), and\n * the `tickOptions` parameter is allowed to default. In this case,\n * `processNewMacroTasksSynchronously` defaults to true, and the nested\n * function is executed on each tick.\n *\n * ```\n * it ('test with nested setTimeout', fakeAsync(() => {\n *   let nestedTimeoutInvoked = false;\n *   function funcWithNestedTimeout() {\n *     setTimeout(() => {\n *       nestedTimeoutInvoked = true;\n *     });\n *   };\n *   setTimeout(funcWithNestedTimeout);\n *   tick();\n *   expect(nestedTimeoutInvoked).toBe(true);\n * }));\n * ```\n *\n * In the following case, `processNewMacroTasksSynchronously` is explicitly\n * set to false, so the nested timeout function is not invoked.\n *\n * ```\n * it ('test with nested setTimeout', fakeAsync(() => {\n *   let nestedTimeoutInvoked = false;\n *   function funcWithNestedTimeout() {\n *     setTimeout(() => {\n *       nestedTimeoutInvoked = true;\n *     });\n *   };\n *   setTimeout(funcWithNestedTimeout);\n *   tick(0, {processNewMacroTasksSynchronously: false});\n *   expect(nestedTimeoutInvoked).toBe(false);\n * }));\n * ```\n *\n *\n * @publicApi\n */\nexport function tick(\n    millis: number = 0, tickOptions: {processNewMacroTasksSynchronously: boolean} = {\n      processNewMacroTasksSynchronously: true\n    }): void {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.tick(millis, tickOptions);\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n\n/**\n * Simulates the asynchronous passage of time for the timers in the `fakeAsync` zone by\n * draining the macrotask queue until it is empty.\n *\n * @param maxTurns The maximum number of times the scheduler attempts to clear its queue before\n *     throwing an error.\n * @returns The simulated time elapsed, in milliseconds.\n *\n * @publicApi\n */\nexport function flush(maxTurns?: number): number {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.flush(maxTurns);\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n\n/**\n * Discard all remaining periodic tasks.\n *\n * @publicApi\n */\nexport function discardPeriodicTasks(): void {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.discardPeriodicTasks();\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n\n/**\n * Flush any pending microtasks.\n *\n * @publicApi\n */\nexport function flushMicrotasks(): void {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.flushMicrotasks();\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Type} from '../interface/type';\nimport {Component} from './directives';\n\n\n/**\n * Used to resolve resource URLs on `@Component` when used with JIT compilation.\n *\n * Example:\n * ```\n * @Component({\n *   selector: 'my-comp',\n *   templateUrl: 'my-comp.html', // This requires asynchronous resolution\n * })\n * class MyComponent{\n * }\n *\n * // Calling `renderComponent` will fail because `renderComponent` is a synchronous process\n * // and `MyComponent`'s `@Component.templateUrl` needs to be resolved asynchronously.\n *\n * // Calling `resolveComponentResources()` will resolve `@Component.templateUrl` into\n * // `@Component.template`, which allows `renderComponent` to proceed in a synchronous manner.\n *\n * // Use browser's `fetch()` function as the default resource resolution strategy.\n * resolveComponentResources(fetch).then(() => {\n *   // After resolution all URLs have been converted into `template` strings.\n *   renderComponent(MyComponent);\n * });\n *\n * ```\n *\n * NOTE: In AOT the resolution happens during compilation, and so there should be no need\n * to call this method outside JIT mode.\n *\n * @param resourceResolver a function which is responsible for returning a `Promise` to the\n * contents of the resolved URL. Browser's `fetch()` method is a good default implementation.\n */\nexport function resolveComponentResources(\n    resourceResolver: (url: string) => (Promise<string|{text(): Promise<string>}>)): Promise<void> {\n  // Store all promises which are fetching the resources.\n  const componentResolved: Promise<void>[] = [];\n\n  // Cache so that we don't fetch the same resource more than once.\n  const urlMap = new Map<string, Promise<string>>();\n  function cachedResourceResolve(url: string): Promise<string> {\n    let promise = urlMap.get(url);\n    if (!promise) {\n      const resp = resourceResolver(url);\n      urlMap.set(url, promise = resp.then(unwrapResponse));\n    }\n    return promise;\n  }\n\n  componentResourceResolutionQueue.forEach((component: Component, type: Type<any>) => {\n    const promises: Promise<void>[] = [];\n    if (component.templateUrl) {\n      promises.push(cachedResourceResolve(component.templateUrl).then((template) => {\n        component.template = template;\n      }));\n    }\n    const styleUrls = component.styleUrls;\n    const styles = component.styles || (component.styles = []);\n    const styleOffset = component.styles.length;\n    styleUrls && styleUrls.forEach((styleUrl, index) => {\n      styles.push('');  // pre-allocate array.\n      promises.push(cachedResourceResolve(styleUrl).then((style) => {\n        styles[styleOffset + index] = style;\n        styleUrls.splice(styleUrls.indexOf(styleUrl), 1);\n        if (styleUrls.length == 0) {\n          component.styleUrls = undefined;\n        }\n      }));\n    });\n    const fullyResolved = Promise.all(promises).then(() => componentDefResolved(type));\n    componentResolved.push(fullyResolved);\n  });\n  clearResolutionOfComponentResourcesQueue();\n  return Promise.all(componentResolved).then(() => undefined);\n}\n\nlet componentResourceResolutionQueue = new Map<Type<any>, Component>();\n\n// Track when existing ɵcmp for a Type is waiting on resources.\nconst componentDefPendingResolution = new Set<Type<any>>();\n\nexport function maybeQueueResolutionOfComponentResources(type: Type<any>, metadata: Component) {\n  if (componentNeedsResolution(metadata)) {\n    componentResourceResolutionQueue.set(type, metadata);\n    componentDefPendingResolution.add(type);\n  }\n}\n\nexport function isComponentDefPendingResolution(type: Type<any>): boolean {\n  return componentDefPendingResolution.has(type);\n}\n\nexport function componentNeedsResolution(component: Component): boolean {\n  return !!(\n      (component.templateUrl && !component.hasOwnProperty('template')) ||\n      component.styleUrls && component.styleUrls.length);\n}\nexport function clearResolutionOfComponentResourcesQueue(): Map<Type<any>, Component> {\n  const old = componentResourceResolutionQueue;\n  componentResourceResolutionQueue = new Map();\n  return old;\n}\n\nexport function restoreComponentResolutionQueue(queue: Map<Type<any>, Component>): void {\n  componentDefPendingResolution.clear();\n  queue.forEach((_, type) => componentDefPendingResolution.add(type));\n  componentResourceResolutionQueue = queue;\n}\n\nexport function isComponentResourceResolutionQueueEmpty() {\n  return componentResourceResolutionQueue.size === 0;\n}\n\nfunction unwrapResponse(response: string|{text(): Promise<string>}): string|Promise<string> {\n  return typeof response == 'string' ? response : response.text();\n}\n\nfunction componentDefResolved(type: Type<any>): void {\n  componentDefPendingResolution.delete(type);\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {ɵstringify as stringify} from '@angular/core';\n\nimport {MetadataOverride} from './metadata_override';\n\ntype StringMap = {\n  [key: string]: any\n};\n\nlet _nextReferenceId = 0;\n\nexport class MetadataOverrider {\n  private _references = new Map<any, string>();\n  /**\n   * Creates a new instance for the given metadata class\n   * based on an old instance and overrides.\n   */\n  overrideMetadata<C extends T, T>(\n      metadataClass: {new(options: T): C;}, oldMetadata: C, override: MetadataOverride<T>): C {\n    const props: StringMap = {};\n    if (oldMetadata) {\n      _valueProps(oldMetadata).forEach((prop) => props[prop] = (<any>oldMetadata)[prop]);\n    }\n\n    if (override.set) {\n      if (override.remove || override.add) {\n        throw new Error(`Cannot set and add/remove ${stringify(metadataClass)} at the same time!`);\n      }\n      setMetadata(props, override.set);\n    }\n    if (override.remove) {\n      removeMetadata(props, override.remove, this._references);\n    }\n    if (override.add) {\n      addMetadata(props, override.add);\n    }\n    return new metadataClass(<any>props);\n  }\n}\n\nfunction removeMetadata(metadata: StringMap, remove: any, references: Map<any, string>) {\n  const removeObjects = new Set<string>();\n  for (const prop in remove) {\n    const removeValue = remove[prop];\n    if (Array.isArray(removeValue)) {\n      removeValue.forEach((value: any) => {\n        removeObjects.add(_propHashKey(prop, value, references));\n      });\n    } else {\n      removeObjects.add(_propHashKey(prop, removeValue, references));\n    }\n  }\n\n  for (const prop in metadata) {\n    const propValue = metadata[prop];\n    if (Array.isArray(propValue)) {\n      metadata[prop] = propValue.filter(\n          (value: any) => !removeObjects.has(_propHashKey(prop, value, references)));\n    } else {\n      if (removeObjects.has(_propHashKey(prop, propValue, references))) {\n        metadata[prop] = undefined;\n      }\n    }\n  }\n}\n\nfunction addMetadata(metadata: StringMap, add: any) {\n  for (const prop in add) {\n    const addValue = add[prop];\n    const propValue = metadata[prop];\n    if (propValue != null && Array.isArray(propValue)) {\n      metadata[prop] = propValue.concat(addValue);\n    } else {\n      metadata[prop] = addValue;\n    }\n  }\n}\n\nfunction setMetadata(metadata: StringMap, set: any) {\n  for (const prop in set) {\n    metadata[prop] = set[prop];\n  }\n}\n\nfunction _propHashKey(propName: any, propValue: any, references: Map<any, string>): string {\n  let nextObjectId = 0;\n  const objectIds = new Map<object, string>();\n  const replacer = (key: any, value: any) => {\n    if (value !== null && typeof value === 'object') {\n      if (objectIds.has(value)) {\n        return objectIds.get(value);\n      }\n      // Record an id for this object such that any later references use the object's id instead\n      // of the object itself, in order to break cyclic pointers in objects.\n      objectIds.set(value, `ɵobj#${nextObjectId++}`);\n\n      // The first time an object is seen the object itself is serialized.\n      return value;\n    } else if (typeof value === 'function') {\n      value = _serializeReference(value, references);\n    }\n    return value;\n  };\n\n  return `${propName}:${JSON.stringify(propValue, replacer)}`;\n}\n\nfunction _serializeReference(ref: any, references: Map<any, string>): string {\n  let id = references.get(ref);\n  if (!id) {\n    id = `${stringify(ref)}${_nextReferenceId++}`;\n    references.set(ref, id);\n  }\n  return id;\n}\n\n\nfunction _valueProps(obj: any): string[] {\n  const props: string[] = [];\n  // regular public props\n  Object.keys(obj).forEach((prop) => {\n    if (!prop.startsWith('_')) {\n      props.push(prop);\n    }\n  });\n\n  // getters\n  let proto = obj;\n  while (proto = Object.getPrototypeOf(proto)) {\n    Object.keys(proto).forEach((protoProp) => {\n      const desc = Object.getOwnPropertyDescriptor(proto, protoProp);\n      if (!protoProp.startsWith('_') && desc && 'get' in desc) {\n        props.push(protoProp);\n      }\n    });\n  }\n  return props;\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Component, Directive, NgModule, Pipe, Type, ɵReflectionCapabilities as ReflectionCapabilities} from '@angular/core';\n\nimport {MetadataOverride} from './metadata_override';\nimport {MetadataOverrider} from './metadata_overrider';\n\nconst reflection = new ReflectionCapabilities();\n\n/**\n * Base interface to resolve `@Component`, `@Directive`, `@Pipe` and `@NgModule`.\n */\nexport interface Resolver<T> {\n  addOverride(type: Type<any>, override: MetadataOverride<T>): void;\n  setOverrides(overrides: Array<[Type<any>, MetadataOverride<T>]>): void;\n  resolve(type: Type<any>): T|null;\n}\n\n/**\n * Allows to override ivy metadata for tests (via the `TestBed`).\n */\nabstract class OverrideResolver<T> implements Resolver<T> {\n  private overrides = new Map<Type<any>, MetadataOverride<T>[]>();\n  private resolved = new Map<Type<any>, T|null>();\n\n  abstract get type(): any;\n\n  addOverride(type: Type<any>, override: MetadataOverride<T>) {\n    const overrides = this.overrides.get(type) || [];\n    overrides.push(override);\n    this.overrides.set(type, overrides);\n    this.resolved.delete(type);\n  }\n\n  setOverrides(overrides: Array<[Type<any>, MetadataOverride<T>]>) {\n    this.overrides.clear();\n    overrides.forEach(([type, override]) => {\n      this.addOverride(type, override);\n    });\n  }\n\n  getAnnotation(type: Type<any>): T|null {\n    const annotations = reflection.annotations(type);\n    // Try to find the nearest known Type annotation and make sure that this annotation is an\n    // instance of the type we are looking for, so we can use it for resolution. Note: there might\n    // be multiple known annotations found due to the fact that Components can extend Directives (so\n    // both Directive and Component annotations would be present), so we always check if the known\n    // annotation has the right type.\n    for (let i = annotations.length - 1; i >= 0; i--) {\n      const annotation = annotations[i];\n      const isKnownType = annotation instanceof Directive || annotation instanceof Component ||\n          annotation instanceof Pipe || annotation instanceof NgModule;\n      if (isKnownType) {\n        return annotation instanceof this.type ? annotation as T : null;\n      }\n    }\n    return null;\n  }\n\n  resolve(type: Type<any>): T|null {\n    let resolved = this.resolved.get(type) || null;\n\n    if (!resolved) {\n      resolved = this.getAnnotation(type);\n      if (resolved) {\n        const overrides = this.overrides.get(type);\n        if (overrides) {\n          const overrider = new MetadataOverrider();\n          overrides.forEach(override => {\n            resolved = overrider.overrideMetadata(this.type, resolved!, override);\n          });\n        }\n      }\n      this.resolved.set(type, resolved);\n    }\n\n    return resolved;\n  }\n}\n\n\nexport class DirectiveResolver extends OverrideResolver<Directive> {\n  override get type() {\n    return Directive;\n  }\n}\n\nexport class ComponentResolver extends OverrideResolver<Component> {\n  override get type() {\n    return Component;\n  }\n}\n\nexport class PipeResolver extends OverrideResolver<Pipe> {\n  override get type() {\n    return Pipe;\n  }\n}\n\nexport class NgModuleResolver extends OverrideResolver<NgModule> {\n  override get type() {\n    return NgModule;\n  }\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {ResourceLoader} from '@angular/compiler';\nimport {ApplicationInitStatus, Compiler, COMPILER_OPTIONS, Component, Directive, Injector, InjectorType, LOCALE_ID, ModuleWithComponentFactories, ModuleWithProviders, NgModule, NgModuleFactory, NgZone, Pipe, PlatformRef, Provider, resolveForwardRef, Type, ɵcompileComponent as compileComponent, ɵcompileDirective as compileDirective, ɵcompileNgModuleDefs as compileNgModuleDefs, ɵcompilePipe as compilePipe, ɵDEFAULT_LOCALE_ID as DEFAULT_LOCALE_ID, ɵDirectiveDef as DirectiveDef, ɵgetInjectableDef as getInjectableDef, ɵNG_COMP_DEF as NG_COMP_DEF, ɵNG_DIR_DEF as NG_DIR_DEF, ɵNG_INJ_DEF as NG_INJ_DEF, ɵNG_MOD_DEF as NG_MOD_DEF, ɵNG_PIPE_DEF as NG_PIPE_DEF, ɵNgModuleFactory as R3NgModuleFactory, ɵNgModuleTransitiveScopes as NgModuleTransitiveScopes, ɵNgModuleType as NgModuleType, ɵpatchComponentDefWithScope as patchComponentDefWithScope, ɵRender3ComponentFactory as ComponentFactory, ɵRender3NgModuleRef as NgModuleRef, ɵsetLocaleId as setLocaleId, ɵtransitiveScopesFor as transitiveScopesFor, ɵɵInjectableDeclaration as InjectableDeclaration} from '@angular/core';\n\nimport {clearResolutionOfComponentResourcesQueue, isComponentDefPendingResolution, resolveComponentResources, restoreComponentResolutionQueue} from '../../src/metadata/resource_loading';\n\nimport {MetadataOverride} from './metadata_override';\nimport {ComponentResolver, DirectiveResolver, NgModuleResolver, PipeResolver, Resolver} from './resolvers';\nimport {TestModuleMetadata} from './test_bed_common';\n\nenum TestingModuleOverride {\n  DECLARATION,\n  OVERRIDE_TEMPLATE,\n}\n\nfunction isTestingModuleOverride(value: unknown): value is TestingModuleOverride {\n  return value === TestingModuleOverride.DECLARATION ||\n      value === TestingModuleOverride.OVERRIDE_TEMPLATE;\n}\n\n// Resolvers for Angular decorators\ntype Resolvers = {\n  module: Resolver<NgModule>,\n  component: Resolver<Directive>,\n  directive: Resolver<Component>,\n  pipe: Resolver<Pipe>,\n};\n\ninterface CleanupOperation {\n  fieldName: string;\n  object: any;\n  originalValue: unknown;\n}\n\nexport class R3TestBedCompiler {\n  private originalComponentResolutionQueue: Map<Type<any>, Component>|null = null;\n\n  // Testing module configuration\n  private declarations: Type<any>[] = [];\n  private imports: Type<any>[] = [];\n  private providers: Provider[] = [];\n  private schemas: any[] = [];\n\n  // Queues of components/directives/pipes that should be recompiled.\n  private pendingComponents = new Set<Type<any>>();\n  private pendingDirectives = new Set<Type<any>>();\n  private pendingPipes = new Set<Type<any>>();\n\n  // Keep track of all components and directives, so we can patch Providers onto defs later.\n  private seenComponents = new Set<Type<any>>();\n  private seenDirectives = new Set<Type<any>>();\n\n  // Keep track of overridden modules, so that we can collect all affected ones in the module tree.\n  private overriddenModules = new Set<NgModuleType<any>>();\n\n  // Store resolved styles for Components that have template overrides present and `styleUrls`\n  // defined at the same time.\n  private existingComponentStyles = new Map<Type<any>, string[]>();\n\n  private resolvers: Resolvers = initResolvers();\n\n  private componentToModuleScope = new Map<Type<any>, Type<any>|TestingModuleOverride>();\n\n  // Map that keeps initial version of component/directive/pipe defs in case\n  // we compile a Type again, thus overriding respective static fields. This is\n  // required to make sure we restore defs to their initial states between test runs\n  // TODO: we should support the case with multiple defs on a type\n  private initialNgDefs = new Map<Type<any>, [string, PropertyDescriptor|undefined]>();\n\n  // Array that keeps cleanup operations for initial versions of component/directive/pipe/module\n  // defs in case TestBed makes changes to the originals.\n  private defCleanupOps: CleanupOperation[] = [];\n\n  private _injector: Injector|null = null;\n  private compilerProviders: Provider[]|null = null;\n\n  private providerOverrides: Provider[] = [];\n  private rootProviderOverrides: Provider[] = [];\n  // Overrides for injectables with `{providedIn: SomeModule}` need to be tracked and added to that\n  // module's provider list.\n  private providerOverridesByModule = new Map<InjectorType<any>, Provider[]>();\n  private providerOverridesByToken = new Map<any, Provider>();\n  private moduleProvidersOverridden = new Set<Type<any>>();\n\n  private testModuleType: NgModuleType<any>;\n  private testModuleRef: NgModuleRef<any>|null = null;\n\n  constructor(private platform: PlatformRef, private additionalModuleTypes: Type<any>|Type<any>[]) {\n    class DynamicTestModule {}\n    this.testModuleType = DynamicTestModule as any;\n  }\n\n  setCompilerProviders(providers: Provider[]|null): void {\n    this.compilerProviders = providers;\n    this._injector = null;\n  }\n\n  configureTestingModule(moduleDef: TestModuleMetadata): void {\n    // Enqueue any compilation tasks for the directly declared component.\n    if (moduleDef.declarations !== undefined) {\n      this.queueTypeArray(moduleDef.declarations, TestingModuleOverride.DECLARATION);\n      this.declarations.push(...moduleDef.declarations);\n    }\n\n    // Enqueue any compilation tasks for imported modules.\n    if (moduleDef.imports !== undefined) {\n      this.queueTypesFromModulesArray(moduleDef.imports);\n      this.imports.push(...moduleDef.imports);\n    }\n\n    if (moduleDef.providers !== undefined) {\n      this.providers.push(...moduleDef.providers);\n    }\n\n    if (moduleDef.schemas !== undefined) {\n      this.schemas.push(...moduleDef.schemas);\n    }\n  }\n\n  overrideModule(ngModule: Type<any>, override: MetadataOverride<NgModule>): void {\n    this.overriddenModules.add(ngModule as NgModuleType<any>);\n\n    // Compile the module right away.\n    this.resolvers.module.addOverride(ngModule, override);\n    const metadata = this.resolvers.module.resolve(ngModule);\n    if (metadata === null) {\n      throw invalidTypeError(ngModule.name, 'NgModule');\n    }\n\n    this.recompileNgModule(ngModule, metadata);\n\n    // At this point, the module has a valid module def (ɵmod), but the override may have introduced\n    // new declarations or imported modules. Ingest any possible new types and add them to the\n    // current queue.\n    this.queueTypesFromModulesArray([ngModule]);\n  }\n\n  overrideComponent(component: Type<any>, override: MetadataOverride<Component>): void {\n    this.resolvers.component.addOverride(component, override);\n    this.pendingComponents.add(component);\n  }\n\n  overrideDirective(directive: Type<any>, override: MetadataOverride<Directive>): void {\n    this.resolvers.directive.addOverride(directive, override);\n    this.pendingDirectives.add(directive);\n  }\n\n  overridePipe(pipe: Type<any>, override: MetadataOverride<Pipe>): void {\n    this.resolvers.pipe.addOverride(pipe, override);\n    this.pendingPipes.add(pipe);\n  }\n\n  overrideProvider(\n      token: any,\n      provider: {useFactory?: Function, useValue?: any, deps?: any[], multi?: boolean}): void {\n    let providerDef: Provider;\n    if (provider.useFactory !== undefined) {\n      providerDef = {\n        provide: token,\n        useFactory: provider.useFactory,\n        deps: provider.deps || [],\n        multi: provider.multi\n      };\n    } else if (provider.useValue !== undefined) {\n      providerDef = {provide: token, useValue: provider.useValue, multi: provider.multi};\n    } else {\n      providerDef = {provide: token};\n    }\n\n    const injectableDef: InjectableDeclaration<any>|null =\n        typeof token !== 'string' ? getInjectableDef(token) : null;\n    const providedIn = injectableDef === null ? null : resolveForwardRef(injectableDef.providedIn);\n    const overridesBucket =\n        providedIn === 'root' ? this.rootProviderOverrides : this.providerOverrides;\n    overridesBucket.push(providerDef);\n\n    // Keep overrides grouped by token as well for fast lookups using token\n    this.providerOverridesByToken.set(token, providerDef);\n    if (injectableDef !== null && providedIn !== null && typeof providedIn !== 'string') {\n      const existingOverrides = this.providerOverridesByModule.get(providedIn);\n      if (existingOverrides !== undefined) {\n        existingOverrides.push(providerDef);\n      } else {\n        this.providerOverridesByModule.set(providedIn, [providerDef]);\n      }\n    }\n  }\n\n  overrideTemplateUsingTestingModule(type: Type<any>, template: string): void {\n    const def = (type as any)[NG_COMP_DEF];\n    const hasStyleUrls = (): boolean => {\n      const metadata = this.resolvers.component.resolve(type)! as Component;\n      return !!metadata.styleUrls && metadata.styleUrls.length > 0;\n    };\n    const overrideStyleUrls = !!def && !isComponentDefPendingResolution(type) && hasStyleUrls();\n\n    // In Ivy, compiling a component does not require knowing the module providing the\n    // component's scope, so overrideTemplateUsingTestingModule can be implemented purely via\n    // overrideComponent. Important: overriding template requires full Component re-compilation,\n    // which may fail in case styleUrls are also present (thus Component is considered as required\n    // resolution). In order to avoid this, we preemptively set styleUrls to an empty array,\n    // preserve current styles available on Component def and restore styles back once compilation\n    // is complete.\n    const override = overrideStyleUrls ? {template, styles: [], styleUrls: []} : {template};\n    this.overrideComponent(type, {set: override});\n\n    if (overrideStyleUrls && def.styles && def.styles.length > 0) {\n      this.existingComponentStyles.set(type, def.styles);\n    }\n\n    // Set the component's scope to be the testing module.\n    this.componentToModuleScope.set(type, TestingModuleOverride.OVERRIDE_TEMPLATE);\n  }\n\n  async compileComponents(): Promise<void> {\n    this.clearComponentResolutionQueue();\n    // Run compilers for all queued types.\n    let needsAsyncResources = this.compileTypesSync();\n\n    // compileComponents() should not be async unless it needs to be.\n    if (needsAsyncResources) {\n      let resourceLoader: ResourceLoader;\n      let resolver = (url: string): Promise<string> => {\n        if (!resourceLoader) {\n          resourceLoader = this.injector.get(ResourceLoader);\n        }\n        return Promise.resolve(resourceLoader.get(url));\n      };\n      await resolveComponentResources(resolver);\n    }\n  }\n\n  finalize(): NgModuleRef<any> {\n    // One last compile\n    this.compileTypesSync();\n\n    // Create the testing module itself.\n    this.compileTestModule();\n\n    this.applyTransitiveScopes();\n\n    this.applyProviderOverrides();\n\n    // Patch previously stored `styles` Component values (taken from ɵcmp), in case these\n    // Components have `styleUrls` fields defined and template override was requested.\n    this.patchComponentsWithExistingStyles();\n\n    // Clear the componentToModuleScope map, so that future compilations don't reset the scope of\n    // every component.\n    this.componentToModuleScope.clear();\n\n    const parentInjector = this.platform.injector;\n    this.testModuleRef = new NgModuleRef(this.testModuleType, parentInjector);\n\n    // ApplicationInitStatus.runInitializers() is marked @internal to core.\n    // Cast it to any before accessing it.\n    (this.testModuleRef.injector.get(ApplicationInitStatus) as any).runInitializers();\n\n    // Set locale ID after running app initializers, since locale information might be updated while\n    // running initializers. This is also consistent with the execution order while bootstrapping an\n    // app (see `packages/core/src/application_ref.ts` file).\n    const localeId = this.testModuleRef.injector.get(LOCALE_ID, DEFAULT_LOCALE_ID);\n    setLocaleId(localeId);\n\n    return this.testModuleRef;\n  }\n\n  /**\n   * @internal\n   */\n  _compileNgModuleSync(moduleType: Type<any>): void {\n    this.queueTypesFromModulesArray([moduleType]);\n    this.compileTypesSync();\n    this.applyProviderOverrides();\n    this.applyProviderOverridesToModule(moduleType);\n    this.applyTransitiveScopes();\n  }\n\n  /**\n   * @internal\n   */\n  async _compileNgModuleAsync(moduleType: Type<any>): Promise<void> {\n    this.queueTypesFromModulesArray([moduleType]);\n    await this.compileComponents();\n    this.applyProviderOverrides();\n    this.applyProviderOverridesToModule(moduleType);\n    this.applyTransitiveScopes();\n  }\n\n  /**\n   * @internal\n   */\n  _getModuleResolver(): Resolver<NgModule> {\n    return this.resolvers.module;\n  }\n\n  /**\n   * @internal\n   */\n  _getComponentFactories(moduleType: NgModuleType): ComponentFactory<any>[] {\n    return maybeUnwrapFn(moduleType.ɵmod.declarations).reduce((factories, declaration) => {\n      const componentDef = (declaration as any).ɵcmp;\n      componentDef && factories.push(new ComponentFactory(componentDef, this.testModuleRef!));\n      return factories;\n    }, [] as ComponentFactory<any>[]);\n  }\n\n  private compileTypesSync(): boolean {\n    // Compile all queued components, directives, pipes.\n    let needsAsyncResources = false;\n    this.pendingComponents.forEach(declaration => {\n      needsAsyncResources = needsAsyncResources || isComponentDefPendingResolution(declaration);\n      const metadata = this.resolvers.component.resolve(declaration);\n      if (metadata === null) {\n        throw invalidTypeError(declaration.name, 'Component');\n      }\n      this.maybeStoreNgDef(NG_COMP_DEF, declaration);\n      compileComponent(declaration, metadata);\n    });\n    this.pendingComponents.clear();\n\n    this.pendingDirectives.forEach(declaration => {\n      const metadata = this.resolvers.directive.resolve(declaration);\n      if (metadata === null) {\n        throw invalidTypeError(declaration.name, 'Directive');\n      }\n      this.maybeStoreNgDef(NG_DIR_DEF, declaration);\n      compileDirective(declaration, metadata);\n    });\n    this.pendingDirectives.clear();\n\n    this.pendingPipes.forEach(declaration => {\n      const metadata = this.resolvers.pipe.resolve(declaration);\n      if (metadata === null) {\n        throw invalidTypeError(declaration.name, 'Pipe');\n      }\n      this.maybeStoreNgDef(NG_PIPE_DEF, declaration);\n      compilePipe(declaration, metadata);\n    });\n    this.pendingPipes.clear();\n\n    return needsAsyncResources;\n  }\n\n  private applyTransitiveScopes(): void {\n    if (this.overriddenModules.size > 0) {\n      // Module overrides (via `TestBed.overrideModule`) might affect scopes that were previously\n      // calculated and stored in `transitiveCompileScopes`. If module overrides are present,\n      // collect all affected modules and reset scopes to force their re-calculation.\n      const testingModuleDef = (this.testModuleType as any)[NG_MOD_DEF];\n      const affectedModules = this.collectModulesAffectedByOverrides(testingModuleDef.imports);\n      if (affectedModules.size > 0) {\n        affectedModules.forEach(moduleType => {\n          this.storeFieldOfDefOnType(moduleType as any, NG_MOD_DEF, 'transitiveCompileScopes');\n          (moduleType as any)[NG_MOD_DEF].transitiveCompileScopes = null;\n        });\n      }\n    }\n\n    const moduleToScope = new Map<Type<any>|TestingModuleOverride, NgModuleTransitiveScopes>();\n    const getScopeOfModule =\n        (moduleType: Type<any>|TestingModuleOverride): NgModuleTransitiveScopes => {\n          if (!moduleToScope.has(moduleType)) {\n            const isTestingModule = isTestingModuleOverride(moduleType);\n            const realType = isTestingModule ? this.testModuleType : moduleType as Type<any>;\n            moduleToScope.set(moduleType, transitiveScopesFor(realType));\n          }\n          return moduleToScope.get(moduleType)!;\n        };\n\n    this.componentToModuleScope.forEach((moduleType, componentType) => {\n      const moduleScope = getScopeOfModule(moduleType);\n      this.storeFieldOfDefOnType(componentType, NG_COMP_DEF, 'directiveDefs');\n      this.storeFieldOfDefOnType(componentType, NG_COMP_DEF, 'pipeDefs');\n      // `tView` that is stored on component def contains information about directives and pipes\n      // that are in the scope of this component. Patching component scope will cause `tView` to be\n      // changed. Store original `tView` before patching scope, so the `tView` (including scope\n      // information) is restored back to its previous/original state before running next test.\n      this.storeFieldOfDefOnType(componentType, NG_COMP_DEF, 'tView');\n      patchComponentDefWithScope((componentType as any).ɵcmp, moduleScope);\n    });\n\n    this.componentToModuleScope.clear();\n  }\n\n  private applyProviderOverrides(): void {\n    const maybeApplyOverrides = (field: string) => (type: Type<any>) => {\n      const resolver = field === NG_COMP_DEF ? this.resolvers.component : this.resolvers.directive;\n      const metadata = resolver.resolve(type)!;\n      if (this.hasProviderOverrides(metadata.providers)) {\n        this.patchDefWithProviderOverrides(type, field);\n      }\n    };\n    this.seenComponents.forEach(maybeApplyOverrides(NG_COMP_DEF));\n    this.seenDirectives.forEach(maybeApplyOverrides(NG_DIR_DEF));\n\n    this.seenComponents.clear();\n    this.seenDirectives.clear();\n  }\n\n  private applyProviderOverridesToModule(moduleType: Type<any>): void {\n    if (this.moduleProvidersOverridden.has(moduleType)) {\n      return;\n    }\n    this.moduleProvidersOverridden.add(moduleType);\n\n    const injectorDef: any = (moduleType as any)[NG_INJ_DEF];\n    if (this.providerOverridesByToken.size > 0) {\n      const providers = [\n        ...injectorDef.providers,\n        ...(this.providerOverridesByModule.get(moduleType as InjectorType<any>) || [])\n      ];\n      if (this.hasProviderOverrides(providers)) {\n        this.maybeStoreNgDef(NG_INJ_DEF, moduleType);\n\n        this.storeFieldOfDefOnType(moduleType, NG_INJ_DEF, 'providers');\n        injectorDef.providers = this.getOverriddenProviders(providers);\n      }\n\n      // Apply provider overrides to imported modules recursively\n      const moduleDef = (moduleType as any)[NG_MOD_DEF];\n      const imports = maybeUnwrapFn(moduleDef.imports);\n      for (const importedModule of imports) {\n        this.applyProviderOverridesToModule(importedModule);\n      }\n      // Also override the providers on any ModuleWithProviders imports since those don't appear in\n      // the moduleDef.\n      for (const importedModule of flatten(injectorDef.imports)) {\n        if (isModuleWithProviders(importedModule)) {\n          this.defCleanupOps.push({\n            object: importedModule,\n            fieldName: 'providers',\n            originalValue: importedModule.providers\n          });\n          importedModule.providers = this.getOverriddenProviders(importedModule.providers);\n        }\n      }\n    }\n  }\n\n  private patchComponentsWithExistingStyles(): void {\n    this.existingComponentStyles.forEach(\n        (styles, type) => (type as any)[NG_COMP_DEF].styles = styles);\n    this.existingComponentStyles.clear();\n  }\n\n  private queueTypeArray(arr: any[], moduleType: Type<any>|TestingModuleOverride): void {\n    for (const value of arr) {\n      if (Array.isArray(value)) {\n        this.queueTypeArray(value, moduleType);\n      } else {\n        this.queueType(value, moduleType);\n      }\n    }\n  }\n\n  private recompileNgModule(ngModule: Type<any>, metadata: NgModule): void {\n    // Cache the initial ngModuleDef as it will be overwritten.\n    this.maybeStoreNgDef(NG_MOD_DEF, ngModule);\n    this.maybeStoreNgDef(NG_INJ_DEF, ngModule);\n\n    compileNgModuleDefs(ngModule as NgModuleType<any>, metadata);\n  }\n\n  private queueType(type: Type<any>, moduleType: Type<any>|TestingModuleOverride): void {\n    const component = this.resolvers.component.resolve(type);\n    if (component) {\n      // Check whether a give Type has respective NG def (ɵcmp) and compile if def is\n      // missing. That might happen in case a class without any Angular decorators extends another\n      // class where Component/Directive/Pipe decorator is defined.\n      if (isComponentDefPendingResolution(type) || !type.hasOwnProperty(NG_COMP_DEF)) {\n        this.pendingComponents.add(type);\n      }\n      this.seenComponents.add(type);\n\n      // Keep track of the module which declares this component, so later the component's scope\n      // can be set correctly. If the component has already been recorded here, then one of several\n      // cases is true:\n      // * the module containing the component was imported multiple times (common).\n      // * the component is declared in multiple modules (which is an error).\n      // * the component was in 'declarations' of the testing module, and also in an imported module\n      //   in which case the module scope will be TestingModuleOverride.DECLARATION.\n      // * overrideTemplateUsingTestingModule was called for the component in which case the module\n      //   scope will be TestingModuleOverride.OVERRIDE_TEMPLATE.\n      //\n      // If the component was previously in the testing module's 'declarations' (meaning the\n      // current value is TestingModuleOverride.DECLARATION), then `moduleType` is the component's\n      // real module, which was imported. This pattern is understood to mean that the component\n      // should use its original sc